I have a matrix in one variable and a list of coordinates in another variable. Is there a way to extract only the matching pairs of coordinate from the matrix? I.e. X(1),Y(1); X(2), Y(2)…

I can extract all of the permutations (X1, Y1; X1 Y2 …X2,Y1 … etc) and then take the diagonal, but I was wondering if there was a simple solution I’m missing to only extract the matched pairs.

Thanks,
Will

%Data
mat = rand(100);

%Coordinates
x_coord = round(rand(10,1)*100);
y_coord = round(rand(10,1)*100);

%Extract coordinates
extracted_coord = diag(mat(x_coord,y_coord));I have a matrix in one variable and a list of coordinates in another variable. Is there a way to extract only the matching pairs of coordinate from the matrix? I.e. X(1),Y(1); X(2), Y(2)…

I can extract all of the permutations (X1, Y1; X1 Y2 …X2,Y1 … etc) and then take the diagonal, but I was wondering if there was a simple solution I’m missing to only extract the matched pairs.

Thanks,
Will

%Data
mat = rand(100);

%Coordinates
x_coord = round(rand(10,1)*100);
y_coord = round(rand(10,1)*100);

%Extract coordinates
extracted_coord = diag(mat(x_coord,y_coord)); I have a matrix in one variable and a list of coordinates in another variable. Is there a way to extract only the matching pairs of coordinate from the matrix? I.e. X(1),Y(1); X(2), Y(2)…

I can extract all of the permutations (X1, Y1; X1 Y2 …X2,Y1 … etc) and then take the diagonal, but I was wondering if there was a simple solution I’m missing to only extract the matched pairs.

Thanks,
Will

%Data
mat = rand(100);

%Coordinates
x_coord = round(rand(10,1)*100);
y_coord = round(rand(10,1)*100);

%Extract coordinates
extracted_coord = diag(mat(x_coord,y_coord)); matrix manipulation, indexing MATLAB Answers — New Questions

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